1. Pay attention to the clearing of ponds A lot of farmers need to save money and save money. Before stocking fish, do not pay attention to the clearing of fish ponds. This practice will cause serious hidden troubles in the whole year's production, resulting in poor control of the water quality in the production season, serious diseases, and some even in the rainy season due to the phenomenon of embankments, resulting in losses. Therefore pond cleaning is essential. The correct method is to catch fish in the winter, drain the pool water, clear the pool of debris, remove excess silt, reinforce the pool, then expose it to the sun and freeze to kill pathogens. 15 days before stocking, the fish should be given a small amount of water. After quick-drying, the whole pool should be splashed with quick lime 75 to 100kg/mu or bleached powder 5~7kg/mu. 2. Pay attention to grasping the timing of stocking and feeding not only affects the growth period of fish, but also affects the survival rate of stocking. The correct time for stocking should be 7-8°C in spring. At this time, the fish scales are tight and their vigor is weak. Fish are not easily injured and the survival rate is high. The stocking is too early, the weather is cold, and it is easy to frostbite the fish. When it is released too late, the fish has strong vigor, which can easily knock the fish, reduce the survival rate of the stocking, and stocking too late will shorten the growth period and affect the growth of the fish. In addition, stocking should be conducted on days when there is no wind on a sunny day. Rain, wind, snow, and freezing weather can cause fish to be frozen and should not be stocked. 3. Pay attention to the use of basal fertilizer. Basal fert can reproduce plankton, on the one hand, for fertilization of water-borne fish; on the other hand, photosynthesis of phytoplankton produces oxygen, which increases the water-soluble oxygen in the pool, which is good for fish growth. In general, the maturity of manure and livestock manure is 200-500kg, and new ponds or thin pools are often used, but the fertilizer tanks with more sediment can be used less or not. 4, pay attention to the selection of high-quality fish should be selected specifications and tidy, healthy, muscular, bright color, scales, fins intact, free from disease-free fish species stocking, in order to improve the survival rate. It is necessary to increase the stocking ratio of large-size fish species as far as possible so that the fish and the morning market can be balanced and supply and increase output and efficiency. 5, pay attention to the prevention of fish injury due to water temperature, temperature is still relatively low when stocking in the spring, accidental operation will make the fish injury is not easy to recover and prone to cause fish disease. Therefore, in the fishing, transportation, stocking and other aspects should be carefully handled to prevent fish injuries. 6. Pay attention to polyculture with reasonable polyculture, make full use of water and food, increase fish production, and increase profits. This is what most farmers know. The key to the problem is how to become polyculture. What kind of mix is ​​more reasonable and can achieve greater benefits. According to many years of experience, I believe that species with mixed species of fish should be determined based on market information to meet the needs of consumers. What are the best-selling fish in the market and the price is good? . And we must pay attention to changing the traditional habit of catching winter fishing in the past as far as possible, and strive to achieve a balanced market for edible fish along with the needs of the market. This will require more specifications and more varieties of stocking, and arrested for listing in order to achieve better results. In the specific stocking, it should also be noted that when the main cultured fish and breeding species are identified, a reasonable mix will be carried out. Generally, the main fish may account for 60% to 70%, and the fish rearing will account for 30% to 40%; Grass carp can be reared with 2 to 5 tails of carp head or carp; 4 to 5 tail carp can be reared with one carp per carp; 500g grass carp can be cared for 1 carp per carp. Regardless of which type of fish is used as the main cultured fish, squid is indispensable as a collocation fish. It has a small individual, and has a strong ability to feed on feedstuffs, has little effect on the main fish, and can increase the yield of the population. Generally, it can hold 200-200 acres. 300 tails, as a filter-feeding fish, can control the pool water, prevent excessive water quality and regulate water quality. In polyculture, it should also be noted that fish with similar or equal feeding habits should be as little as possible polycultured or not, in order to prevent one species from robbing one another and affecting the feeding and growth of another. 7. Pay attention to the practice of fingerling disinfection. Fish disinfection is one of the important measures for disease prevention and treatment. Disinfection of fingerlings can reduce the occurrence of diseases and increase the survival rate. The commonly used disinfection methods are: 3% to 4% salt water dipping fish species for 5 to 10 minutes, or 8mg/L copper sulfate solution for 15 to 20 minutes, also can use 10mg/L bleach solution to dip fish species 15 to 20 minutes. 8. Pay attention to the temperature during stocking to prevent the temperature difference from being too large. The spring temperature is low, the water temperature is also low, and the temperature difference is often large. Before the long-distance transported fish species are put into the pond, the water temperature in the pool water and the fish box should be measured. If the temperature difference is large (more than 3 °C), the fish tank should be discharged half of the water, and then pumped into pond water until the temperature of the fish tank and the pool water temperature close to stocking again, to prevent the temperature difference is too large and directly stocking, causing fish and other cold illnesses. 9, pay attention to the test of water that is 3 to 5 days before stocking, take a few fish into the pond to be put fish species (or take a bucket of pond water into a few fish), see whether the fish can survive in water, to be determined When the fish can survive in the pool water, it can be restocked to prevent fish poisoning from disappearing and prevent dead fish accidents. It should be noted that the water temperature in spring is low, and the toxicity disappears slowly after clearing the drug. Therefore, it should wait a bit longer to release the fish. 10, pay attention to well stocking record down date of stocking, species, specifications, quantity, sources, etc., be aware of, provide the basis for the next aquaculture management. 11, pay attention to timely feeding fish stocking, should pay attention to early feeding, so that the fish early feeding, early growth. After 3 to 4 days of general stocking, the fish has adapted to the new environment and can start feeding. In the early stages, more feed with high protein content is fed.